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Valve Seat NSN 4820-01-442-0439

Item Description

A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.

NSN 4820-01-442-0439 NSN: 4820-01-442-0439

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Features and Characteristics

Thread Class
3a single threaded portion
Thread Length
0.752 inches single threaded portion
Overall Height
1.375 inches
Body Outside Diameter
5.140 inches
Body Inside Diameter
4.625 inches
End Application
Seawolf class ssn
Thready Qty Per Inch (tpi)
12 single threaded portion
Hardness Rating
115.0 rockwell r seat
Thread Size
5.250 inches single threaded portion
Seating Surface Shape
Flat
Special Features
A/k/a seat, lower
Material
Plastic polytetrafluoroethylene seat
Style Designator
Plain
Thread Series Designator
Un single threaded portion
FSC
4820 Nonpowered Valves
NIIN
014420439
NSN
4820014420439

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
218020209
Cage Code:
53711
Status:
A
MSDS:
Part Number:
801-6556655 FIND A6
Cage Code:
53711
Status:
A
MSDS:
Part Number:
801-6556655-A6
Cage Code:
53711
Status:
A
MSDS:
Part Number:
2643-1002-63 FN A6
Cage Code:
96169
Status:
A
MSDS:
Part Number:
2643-1002-63
Cage Code:
96169
Status:
A
MSDS:
Part Number:
6556655
Cage Code:
53711
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 8481909090
  • NAICS: 332911
  • SITC: 74790
  • Description: Parts of taps, cocks, valves and similar appliances, nesoi
  • End Use (Code 21180):
    Industrial machines, other

Q & A

Frequently asked questions for NSN 4820-01-442-0439
What are the manufacturers of nsn 4820014420439?
Does this nsn 4820014420439 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 4820014420439
A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. the body may have a flange of various shapes. for diesel and gasoline reciprocating engines, see insert, engine valve seat.
Does nsn 4820014420439 contain any precious metals?
No precious metal content.
Does nsn 4820014420439 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 4820014420439?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
22113
FIIG:
A15500
App. Key:
A
Cond. Code:
2
Status:
A

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